BHoM · BHoMBot · Dec 22, 2025 · Dec 22, 2025 · Dec 23, 2025 · Jan 15, 2026
diff --git a/Python_Engine/Compute/BasePythonEnvironment.cs b/Python_Engine/Compute/BasePythonEnvironment.cs
@@ -1,6 +1,6 @@
 /*
  * This file is part of the Buildings and Habitats object Model (BHoM)
- * Copyright (c) 2015 - 2025, the respective contributors. All rights reserved.
+ * Copyright (c) 2015 - 2026, the respective contributors. All rights reserved.
  *
  * Each contributor holds copyright over their respective contributions.
  * The project versioning (Git) records all such contribution source information.
@@ -79,3 +79,4 @@ public static PythonEnvironment BasePythonEnvironment(
 }
 
 
+
diff --git a/Python_Engine/Compute/Download.cs b/Python_Engine/Compute/Download.cs
@@ -1,6 +1,6 @@
 /*
  * This file is part of the Buildings and Habitats object Model (BHoM)
- * Copyright (c) 2015 - 2025, the respective contributors. All rights reserved.
+ * Copyright (c) 2015 - 2026, the respective contributors. All rights reserved.
  *
  * Each contributor holds copyright over their respective contributions.
  * The project versioning (Git) records all such contribution source information.
@@ -91,7 +91,7 @@ public static string DownloadFile(
 
         [Description("Download and install a specified version of python, and return the executable for it.")]
         [Input("version", "The version of python to download.")]
-        [Output("pythonExecutable", "The executable (python.exe) for the python version that was installed")]
+        [Output("pythonExecutable", "The executable (python.exe) for the python version that was installed.")]
         public static string DownloadPythonVersion(this PythonVersion version)
         {
             string url = version.EmbeddableURL();
@@ -122,6 +122,7 @@ public static string DownloadPythonVersion(this PythonVersion version)
                 }
             })
             {
+                install.StartInfo.Environment["PYTHONHOME"] = "";
                 install.Start();
                 string stderr = install.StandardError.ReadToEnd();
                 install.WaitForExit();
@@ -148,3 +149,4 @@ public static string DownloadPythonVersion(this PythonVersion version)
 }
 
 
+
diff --git a/Python_Engine/Compute/InstallPackage.cs → Python_Engine/Compute/Install.cs b/Python_Engine/Compute/InstallPackage.cs → Python_Engine/Compute/Install.cs
@@ -1,6 +1,6 @@
 /*
  * This file is part of the Buildings and Habitats object Model (BHoM)
- * Copyright (c) 2015 - 2025, the respective contributors. All rights reserved.
+ * Copyright (c) 2015 - 2026, the respective contributors. All rights reserved.
  *
  * Each contributor holds copyright over their respective contributions.
  * The project versioning (Git) records all such contribution source information.
@@ -59,9 +59,10 @@ List<string> packages
                     FileName = executable,
                     Arguments = $"-m pip install --no-warn-script-location {packagesString}",
                     UseShellExecute = false,
-                    RedirectStandardError = true,
+                    RedirectStandardError = true
                 }
             };
+            process.StartInfo.Environment["PYTHONHOME"] = "";
             using (Process p = Process.Start(process.StartInfo))
             {
                 string standardError = p.StandardError.ReadToEnd();
@@ -111,6 +112,7 @@ string requirements
                     RedirectStandardError = true,
                 }
             };
+            process.StartInfo.Environment["PYTHONHOME"] = "";
             using (Process p = Process.Start(process.StartInfo))
             {
                 string standardError = p.StandardError.ReadToEnd();
@@ -155,6 +157,7 @@ string packageDirectory
                     RedirectStandardError = true,
                 }
             };
+            process.StartInfo.Environment["PYTHONHOME"] = "";
             using (Process p = Process.Start(process.StartInfo))
             {
                 string standardError = p.StandardError.ReadToEnd();
@@ -178,3 +181,4 @@ string packageDirectory
 }
 
 
+
diff --git a/Python_Engine/Compute/Remove.cs b/Python_Engine/Compute/Remove.cs
@@ -1,6 +1,6 @@
 /*
  * This file is part of the Buildings and Habitats object Model (BHoM)
- * Copyright (c) 2015 - 2025, the respective contributors. All rights reserved.
+ * Copyright (c) 2015 - 2026, the respective contributors. All rights reserved.
  *
  * Each contributor holds copyright over their respective contributions.
  * The project versioning (Git) records all such contribution source information.
@@ -109,6 +109,7 @@ public static void RemoveBaseVersion(PythonVersion version = PythonVersion.v3_10
                 }
             })
             {
+                uninstall.StartInfo.Environment["PYTHONHOME"] = "";
                 uninstall.Start();
                 string stderr = uninstall.StandardError.ReadToEnd();
                 uninstall.WaitForExit();
@@ -139,3 +140,4 @@ public static void RemoveEverything()
 }
 
 
+
diff --git a/Python_Engine/Compute/RequirementsTxt.cs b/Python_Engine/Compute/RequirementsTxt.cs
@@ -1,6 +1,6 @@
 /*
  * This file is part of the Buildings and Habitats object Model (BHoM)
- * Copyright (c) 2015 - 2025, the respective contributors. All rights reserved.
+ * Copyright (c) 2015 - 2026, the respective contributors. All rights reserved.
  *
  * Each contributor holds copyright over their respective contributions.
  * The project versioning (Git) records all such contribution source information.
@@ -69,6 +69,8 @@ public static string RequirementsTxt(
                     RedirectStandardOutput = true
                 }
             };
+
+            process.StartInfo.Environment["PYTHONHOME"] = "";
             using (Process p = Process.Start(process.StartInfo))
             {
                 StreamWriter sr = new StreamWriter(targetPath);
@@ -86,3 +88,4 @@ public static string RequirementsTxt(
 }
 
 
+
diff --git a/Python_Engine/Compute/Run.cs b/Python_Engine/Compute/Run.cs
@@ -1,6 +1,6 @@
 /*
  * This file is part of the Buildings and Habitats object Model (BHoM)
- * Copyright (c) 2015 - 2025, the respective contributors. All rights reserved.
+ * Copyright (c) 2015 - 2026, the respective contributors. All rights reserved.
  *
  * Each contributor holds copyright over their respective contributions.
  * The project versioning (Git) records all such contribution source information.
@@ -52,6 +52,7 @@ public static string RunCommandStdout(string command, bool hideWindows = true, s
                 process.StartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
                 commandMode = "/C";
             }
+            process.StartInfo.Environment["PYTHONHOME"] = "";
             process.StartInfo.FileName = "cmd.exe";
             process.StartInfo.RedirectStandardOutput = true;
             process.StartInfo.RedirectStandardError = true;
@@ -100,3 +101,4 @@ public static string RunPythonString(this oM.Python.PythonEnvironment env, strin
 }
 
 
+
diff --git a/Python_Engine/Compute/UnzipFile.cs b/Python_Engine/Compute/UnzipFile.cs
@@ -1,6 +1,6 @@
 /*
  * This file is part of the Buildings and Habitats object Model (BHoM)
- * Copyright (c) 2015 - 2025, the respective contributors. All rights reserved.
+ * Copyright (c) 2015 - 2026, the respective contributors. All rights reserved.
  *
  * Each contributor holds copyright over their respective contributions.
  * The project versioning (Git) records all such contribution source information.
@@ -83,3 +83,4 @@ public static void UnzipFile(
 }
 
 
+
diff --git a/Python_Engine/Compute/VirtualEnvironment.cs b/Python_Engine/Compute/VirtualEnvironment.cs
@@ -1,6 +1,6 @@
 /*
  * This file is part of the Buildings and Habitats object Model (BHoM)
- * Copyright (c) 2015 - 2025, the respective contributors. All rights reserved.
+ * Copyright (c) 2015 - 2026, the respective contributors. All rights reserved.
  *
  * Each contributor holds copyright over their respective contributions.
  * The project versioning (Git) records all such contribution source information.
@@ -91,6 +91,8 @@ public static PythonEnvironment VirtualEnvironment(this PythonVersion version, s
                 }
             };
 
+            process.StartInfo.Environment["PYTHONHOME"] = "";
+
             using (Process p = Process.Start(process.StartInfo))
             {
                 string standardError = p.StandardError.ReadToEnd();
@@ -114,6 +116,8 @@ public static PythonEnvironment VirtualEnvironment(this PythonVersion version, s
                 }
             };
 
+            process.StartInfo.Environment["PYTHONHOME"] = "";
+
             using (Process p = Process.Start(process2.StartInfo))
             {
                 string standardError = p.StandardError.ReadToEnd();
@@ -128,3 +132,4 @@ public static PythonEnvironment VirtualEnvironment(this PythonVersion version, s
 }
 
 
+
diff --git a/Python_Engine/Convert/ToPython.cs b/Python_Engine/Convert/ToPython.cs
@@ -1,6 +1,6 @@
 /*
  * This file is part of the Buildings and Habitats object Model (BHoM)
- * Copyright (c) 2015 - 2025, the respective contributors. All rights reserved.
+ * Copyright (c) 2015 - 2026, the respective contributors. All rights reserved.
  *
  * Each contributor holds copyright over their respective contributions.
  * The project versioning (Git) records all such contribution source information.
@@ -39,3 +39,4 @@ public static bool ToPython<T>(this T[,] input)
         }
     }
 }
+
diff --git a/Python_Engine/Modify/AddQuotesIfRequired.cs b/Python_Engine/Modify/AddQuotesIfRequired.cs
@@ -1,6 +1,6 @@
 /*
  * This file is part of the Buildings and Habitats object Model (BHoM)
- * Copyright (c) 2015 - 2025, the respective contributors. All rights reserved.
+ * Copyright (c) 2015 - 2026, the respective contributors. All rights reserved.
  *
  * Each contributor holds copyright over their respective contributions.
  * The project versioning (Git) records all such contribution source information.
@@ -35,7 +35,7 @@
        [Description("Adds quotes to a string (usually a file-path) if it contains spaces.")]
        [Input("path", "The file-path to add quotes around if necessary.")]
        [Output("path", "A usable file-path.")]
        public static string AddQuotesIfRequired(this string path)
        {
            return !string.IsNullOrWhiteSpace(path) ?
                path.Contains(" ") && (!path.StartsWith("\"") && !path.EndsWith("\"")) ?
@@ -48,3 +48,4 @@
 
 
 
+
diff --git a/Python_Engine/Python/src/python_toolkit/__init__.py b/Python_Engine/Python/src/python_toolkit/__init__.py
@@ -0,0 +1,20 @@
+"""Base module for the python_toolkit package."""
+# pylint: disable=E0401
+import getpass
+import os
+from pathlib import Path
+
+import matplotlib.pyplot as plt
+
+# pylint: disable=E0401
+
+# get common paths
+DATA_DIRECTORY = (Path(__file__).parent.parent / "data").absolute()
+BHOM_DIRECTORY = (Path(__file__).parent / "bhom").absolute()
+HOME_DIRECTORY = (Path("C:/Users/") / getpass.getuser()).absolute()
+
+TOOLKIT_NAME = "Python_Toolkit"
+
+if os.name == "nt":
+    # override "HOME" in case this is set to something other than default for windows
+    os.environ["HOME"] = (Path("C:/Users/") / getpass.getuser()).as_posix()
diff --git a/...hon/src/python_toolkit/bhom/bhom.mplstyle → ...e/Python/src/python_toolkit/bhom.mplstyle b/...hon/src/python_toolkit/bhom/bhom.mplstyle → ...e/Python/src/python_toolkit/bhom.mplstyle
diff --git a/Python_Engine/Python/src/python_toolkit/bhom/__init__.py b/Python_Engine/Python/src/python_toolkit/bhom/__init__.py
@@ -1,5 +1,6 @@
 """Root for the bhom subpackage."""
 
+import os
 from pathlib import Path  # pylint: disable=E0401
 from os import path
 import tempfile
@@ -9,6 +10,13 @@
 TOOLKIT_NAME = "Python_Toolkit"
 BHOM_VERSION = importlib.metadata.version("python_toolkit")
 
+#Environment variable that if set disables BHoM analytics logging.
+DISABLE_ANALYTICS = os.environ.get("DISABLE_BHOM_ANALYTICS", None)
+if DISABLE_ANALYTICS is None:
+    DISABLE_ANALYTICS = False
+else:
+    DISABLE_ANALYTICS = True
+
 if not BHOM_LOG_FOLDER.exists():
     BHOM_LOG_FOLDER = Path(tempfile.gettempdir()) / "BHoM" / "Logs"
     BHOM_LOG_FOLDER.mkdir(exist_ok=True, parents=True)